Portable saw support



July 5, 1932 J. s. HUGHES 1,865,759

PORTABLE SAW SUPPORT File-d Oct. 2, 1929 2 Sheets-Sheet 1||||||||||||ll| |||||l| TTORIYEY- July 5, 19.321 v J. s. HUGHES v1,865,759

PORT ABLE SAW SUPPORT Filed Oct. 2, 1929 2 Sheets-Sheet 2 HrroemsyPatented `luly 5, 1932 estarse BATT JOSEPH S. HUGHES, OF LOS ANGELES,CALIFORNIA PORTABLE SAW SUPPORT Application filed October 2, 1929.Serial No. 396,726.

This invention has to do with portable, power` driven saws, and is moreparticularly related to supporting devices, whereby saws of thischaracter may be held in predetermined positions to form what is, ineffect, a bench or table saw, which may be adjusted for use, either as across cut saw or a rip saw.

The portable saws to which this invention relate ordinarily consist of amotor, which is mounted in a frame and which is associated with acircular lsaw. The entire device is made of such proportions that it canbe conveniently handled by hand.

It is a primary object of this invention to produce a saw support of theclass described, which is of simple form and construction, can beeconomically manufactured, is light in weight so that it can beconveniently carried from place to place, and is .so constructed that tit may be easily assembled and disassembled.

It is frequently desirable, in cutting lumber for large jobs, to cutnumerous pieces on a fixed bevel, and it is, therefore, an object ofthis invention to produce a support of the class described, whereby thesaw may be adjusted and held in various angular positions to obtainmiter cuts during either ripping or. cross cutting operations.

The general construction of the device contemplated by this inventioncomprises an upright frame, a substantially horizontal arm, which ismounted upon the frame, and a cradle which is .slidably mounted upon thearm. The cradle is so constructed as to receive a clamp which, in turn,supports the portable saw. The arm which carries the cradle is attachedto the frame in a manner such that it may be adjusted both verticallyand angularly, and the cradle is so constructed that the saw may berotated to various angular positions.

Details in the construction of a preferred form of my invention,together with other objects attending its production, will be bestunderstood from the following description of the accompanying drawings,in which Fig. 1 is an elevational view, partly in section, showing apreferred form of my invention, which is equipped with a standard formof portable saw. p

Fig. 2 is a partial plan section, which may be considered as having beentaken substantially in a plane represented by the line 22 in Fig. 1.

Fig. 3 is an end elevation, which may be considered as having been takensubstantially in the direction of the arrow 8 in Fig. 1.

Fig. 4 is an inverted plan view of the cradle used to support the saw,and may be considered as having been taken substantially in a. planerepresented by the line 4--4 in Fig. 3, and

Fig. 5 is a sectional elevation, which may be considered as having beentaken substantially in a plane represented by the line 545 in Fig. 1.

More Y} oarticularly describing the invention as herein illustrated,reference numeral 11 indicates an upright frame which is clamped uponv abase member 12 by means such as an angular bracket or brackets indicatedat 13.

The frame 11 is preferably made in the form of an inverted U or an openA, having a substantially horizontal top cross member 14. The crossmember 14 is provided with a vertical sleeve 15, which may be castintegrally with the frame 11, and is shown as extending partly above andpartly below the cross member 14. The sleeve 15 is shown as havingmounted therein an intermediate sleeve 17, the lower end of which isprovided with a collar18, which is adapted to engage the bottom of thesleeve member 15. This intermediate sleeve member 1'? is internallythreaded, as indicated at 19, so as to receive a downwardly threadedshank or pin 20, thel upper end of which is provided with a hand wheel21. A smooth bushing 22l is interposed between the hub of the hand wheel21 and the upper end portion of the sleeve 15, and is held in a fixedposition within the sleeve 15 by means of a set screw 23.

It will be seen from the construction so far described that the handwheel 21 and the pin 20 associated therewith may be used to raise andlower the intermediate sleeve 17.

The collar member 18, which is formed on the lower end of theintermediate sleeve 17, is provided with two oppositely extending armsupporting sleeve members 24 and 24. These members receive the innerends 25 and 25 of horizontal arms 26 and 26.

The horizontal arms 26 and 26, which will be hereinafter referred to ascooperating to form an arm member, support a cradle 27 which, in turn,supports a clamp member 28. The clamp member 28 is adapted to receiveand hold a portable saw, generally indicated by reference numeral 29,and an adjustable saw brace 29 is mounted upon the cradle member, asshown in Fig. 1, to assure rigid support of the saw.

The outer ends of the arms 26 and 26 are attached to each other by meansof a yoke 30, and the yoke is, in turn, connected at its mid point tothe upper end of the outer sleeve or standard 15 by means of a brace 31.

It has been previously mentioned herein that the arm member, consistingof the arms 26 and 26, was adapted to swing in a horizontal plane, andin order that the unit may be held rigidly in any predetermined angularposition following such swinging movement, I prefer to make the outersleeve 15 in the form of a clamp, as indicated in section in Fig. 2.This is done simply by providing a slot or split in the sleeve 15, andequipping the lower end of the sleeve with a pair of cooperating ears 33and 33, which are adapted to receive a bolt or pin 34.

For the purpose of facilitating the angular adjustment of the armmember, I provide the collar member 18 with graduations, as indicated at18, which cooperate with a. pointer 35, mounted in a boss 36, formedupon the front of the sleeve 15.

To obviate the possibility of binding between the brace 31 and the armmember during the swinging movement thereof, I show the upper end of thebrace as being pivotally mounted upon an outwardly extending boss, asindicated at 37, and the lower end of the brace is provided with a slot38, which receives a retaining pin 39 that engages the yoke at itsmid-point.

The cradle member 27, which carries the sav,7 supporting clamp 28, ismade in the f form of two crossed and downwardly eX- tending arcuatemembers 40 and 41. These members are mounted or cast upon the lower edgeof a head frame 42, which comprises sleeves 43 and 44 and transversebrace members 45 and 46.

For convenience in assembling the unit, I prefer to make the sleeves 43and 44 in two sections, as is perhaps most clearly illustrated in Fig.5. These sections are shown as being connected by means of bolts,generally indicated by reference numeral 48.

The two arcuate members 40 and 41 are provided with intersecting slots49 and 50, and the saw supporting clamp 28 is supported from the arcuatemember by means of a bolt 51, which extends upwardly through the slotsin the arcuate member and is provided with a nut 52, which engages theupper surface of the arcuate member from which the clamp is supported.

In the use of this saw supporting unit as a cross cut saw, the saw issupported in the manner indicated in the full line position vshown inFig. 1, with the clamping bolt 51 situated at the center of the twointersecting arcs 4() and 41. The timber to be sawed is placed upon thebase member 12, and the saw is advanced therethrough by sliding thecradle 27 upon the arm member which comprises the two extending arms 26and 26.

rlhe portable saws used in connection with my invention are ordinarilyprovided with a handle, as indicated at 54, but it is to be understoodthat this sliding movement can be cc7 nveniently eected by grasping thecradle 2 It is frequently desirable to use a saw of this character indado work, in which event the vertical adjustment comes into play foradjusting the position of the saw unit so as to obtain the desired depthof dado cut.

It is also frequently desirable to provide cuts or dadoes which extendonly partially through the width of the timber, and for the purpose ofgaging the width of such cuts, I provide the arm members 26 and 26 withopposite disposed adjustable stops, indicated by reference numerals 55,55 and 56, 56.

For the purpose of obviating the necessity of measuring the width of acut of the latter class described above, I provide one of the armmembers 26 with a series of graduations, as indicated at 58, and byusing these graduations in cooperation with the stop members 55, 55, itwill be seen that the width of the cut can be easily governed withoutthe use of a rule or other measuring device.

It is sometimes necessary or desirable in sawing timber to provide acompound miter cut, and in making such cut, the clamp member 28 is swungto an angular position, as indicated at 28a in dot and dash line-s inFig. 3, and the arm member is also swung about its vertical pivot pointto the desired angle. It

will be apparent, therefore, that the saw support contemplated by thisinvention may be used in making any desired type of cross cut.

In usingthe saw support for ripping timber, the clamp 28 is adjusted tothe position 285 as shown in dot and dash lines in Fig. 3,

where the saw is held in vertical plane which is parallel to thelongitudinal aXis of the timber supported upon the base plate 12. Inoperating the saw in this manner, cradle 27 is clamped in apredetermined fixed position by means of the stop members 55, and 56,56', and the timber is advanced below the saw. In making a bevel ripcut, the clamping member is swung in the arcuate member 40 to a positionsuch as is indicated in the dot and dash lines at 28@ in Fig. 1, and thearms may be vertically adjusted to obtain the desired depth of a miterrip cut.

It will be seen from the above description that this invention providesa saw support in which the saw may be readily adjusted for use, either`as a rip saw or a cross cut saw, and that the cradle member 27,consisting-of two slotted arcuate members 40 and 41, provides meanswhereby the saw can be conveniently set to out at any desired verticalor horizontal angle. The support itself comprises very few parts and itsmanufacture and assembly are very simple.

It is to be understood that, while I have herein described andillustrated one preferred embodiment of the invention, the invention isnot limited to the precise construction set forth above, but includeswithin its scope Whatever changes fairly come within the spirit of theappended claims.

I claim as my invention:

1. For use in combination with a portable power saw, a supportembodying: a frame; an arm member mounted on said frame; a cradleslidably mounted on said arm member said cradle embodying curvedintersecting slots; and a clamp adapted to travel in said slots andsupport said saw, said clamp being adapted for angular adjustment insaid slots in two iintersecting` vertical planes.

2. For use in combination with a portable power saw, a supportembodying: a frame; an arm member rotably mounted on said frame; a.cradle slidably mounted on said arm member, said cradle embodyingintersecting arcuate slots; and a clamp adapted to travel in said slotsand support said saw, said clamp being adapted for angular adjustment insaid slot-s in two intersectingr vertical planes which are normal toeach other.

3. For use in combination with a portable power saw, a supportembodying: a frame; an arm member mounted on said frame; a cradlemounted on said arm member, said cradle comprising two intersecting arcmembers; and a clamp adjustably mounted on said arc members forreceiving said saw.

4. For use in combination with a portable power saw, a. supportembodying: a frame;

an arm member mounted on said frame; a

depending cradle provided with an arcuate slot mounted on said armmember; a clamp for supporting said saw; and means in said slot foradjustably supporting said clamp.

5. For use incombination with a portable power saw, a support embodying:a frame; an arm member mounted on said frame; a depending cradleprovided with intersecting arcuate slots mounted on said arm member; aclamp for supporting lsaid saw; and cooperative-means in said clamp andsaid slots for adjustably supporting said clamp upon said cradle. Y

For use in combination with a portable power saw, a support embodying: aframe; an arm member mounted on said frame; a depending concave slottedcradle mounted on said arm; a clamp for supporting said saw; and meansin the slot in said cradle for supporting said clamp.

7. For use in combination with a portable power saw, a supportembodying: a frame; an arm member mounted on said frame; a downwardlyconcave cradle provided with intersecting slots mounted on said armmember; a clamp for supporting said saw; and means adapted for receptionin the slots for supporting said clamp.

8. For use in combination with a portable power saw, a supportembodying: a frame; a set of parallel arms mounted on said frame; acradle comprising two intersecting are members mounted between andextending downwardly from said arms; a clamp adapted to support saidsaw; and means for supporting said clamp from either of said arcmembers.

9. For use in combination with a portable power saw, a supportembodying: a frame; a set of parallel arms mounted on said frame: acradle comprising two intersecting slotted arc members mounted betweenand extending downwardly from said arms; a clamp adapted to support saidsaw; and means adapted to be received in said slots for supporting lsaidclamp from either of said arc members.

10. For use in combination with a portable power saw, a supportembodying: a frame; a set of parallel arms mounted on said frame; acradle comprising two intersecting arc members slidably mounted betweenand eX- tending` downwardly from said arms; a clamp adapted to supportsaid saw; and means for supporting said clamp from either of said arcmembers.

11. For use in combination with a portable power saw, a supportembodying: a frame; a set of parallel arms mounted on said frame; acradle comprising a head frame slidably mounted on said arms; twodownwardly extending intersecting arc members mounted on said headframe; a clamp adapted to support said saw; and means for supportingsaid clamp from either of said arc members.

12. For use in combination with a portable power saw, a supportembodying: a frame; a set of parallel arms mounted on said frame;

a cradle comprising a head frame sldahly mounted on said arms; twodownwardly eX tending slotted intersecting are members mounted on saidhead frame; a clamp adapted to support said saw; and means adapted to bereceived in said slots for supporting said clamp from ether of said arcmembers.

In testimony whereof7 I have hereunto set my hand at Los Angeles,California, this 28th day of September, 1929.

JOSEPH S. HUGHES.

